System and method for closed loop monitoring of monopolar electrosurgical apparatus

Abstract

An electrosurgical system is disclosed comprising a generator configured to electrosurgical coagulation waveforms. The generator includes a closed loop control system for controlling the electrosurgical coagulation waveforms. The closed loop control system includes a sensor configured to sense a tissue property and / or an energy property and to transmit the tissue property and / or the energy property as one or more sensor signals having an amplitude. The control system also includes a gain controller configured to process the at least one sensor signal to reduce the amplitude of the sensor signals and to obtain a signal to noise ratio of the at sensor signals within a predetermine range. A microprocessor coupled to the generator and is configured to adjust the electrosurgical coagulation waveforms as a function of the sensor signals.

Description

PRIORITY CLAIM[0001]This application claims priority to a U.S. Provisional Application Ser. No. 60 / 761,440 entitled “System and Method for Closed Loop Monitoring of Monopolar Electrosurgical Apparatus” filed by Robert Wham et al. on Jan. 24, 2006. The entire contents of which is incorporated by reference herein.BACKGROUND[0002]1. Field[0003]The present disclosure relates generally to electrosurgical system and method, more specifically, to a system and method for closed loop monitoring of monopolar electrosurgical apparatus to sense tissue and energy properties and control energy delivery based on the sensed properties.[0004]2. Description of the Related Art[0005]Electrosurgery involves application of high radio frequency electrical current to a surgical site to cut, ablate, or coagulate tissue. In monopolar electrosurgery, a source or active electrode delivers radio frequency energy from the electrosurgical generator to the tissue and a return electrode carries the current back to ...

AI Technical Summary

Benefits of technology

The present disclosure provides an electrosurgical system with closed loop monitoring. This system includes a sensor to monitor tissue properties and a microprocessor to adjust the RF output stage accordingly. The system can automatically control the RF energy in response to changes in tissue until a desired clinical effect is achieved. The system can also adjust the electrosurgical waveforms in real-time to match the sensor signals. The technical effects of this system include improved coagulation control, reduced tissue damage, and improved clinical outcomes.

Problems solved by technology

This adjustment process is cumbersome since the coagulation waveform may need to be adjusted continuously during its delivery.

However, there are no systems available which can adjust the coagulation waveform automatically.

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